Blast furnace slag granulation and waste heat recovery device
A waste heat recovery device and blast furnace slag technology, applied in the field of ironmaking, can solve the problems of high-quality waste heat resource waste, unrecoverable heat, pollution of the surrounding environment, etc., and achieve the effects of saving consumption, fully and effectively recycling, and reducing pollution.
Active Publication Date: 2014-02-19
潼关中金冶炼有限责任公司
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Problems solved by technology
At present, water quenching is generally used to granulate and cool high-temperature liquid blast furnace slag, which consumes a lot of water, pollutes the surrounding environment, heat cannot be recovered, and a large amount of high-quality waste heat resources are wasted
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[0009] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0010] As shown in the figure, the present invention is mainly composed of a slag chute (1), a liquid slag hopper (2), a quick cooling chamber (3), a star-shaped slag unloading wheel (9), and an air cooling chamber (10). The slag chute (1) is located on the top of the device, its inlet is slightly higher connected to the slag ditch of the blast furnace casting house, and its outlet is slightly lower than the liquid slag hopper (2); the lower part of the liquid slag hopper (2) is connected to the quick cooling chamber (3 ), the slag chute (1) and the liquid slag hopper (2) are made of refractory materials; the bottom of the quick cooling chamber (3) is equipped with a star-shaped slag unloading wheel (9) and is connected to the air cooling chamber (10) at the bottom ). It is characterized in that the rapid cooling chamber (3) is composed of the upper part of ...
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The invention discloses a blast furnace slag granulation and waste heat recovery device which mainly comprises a slag sliding port (1), a liquid slag bucket (2), a quick cooling cavity (3), a star-shaped slag dumping wheel (9) and an air cooling cavity (10), wherein the quick cooling cavity (3) is further divided into an upper granulation wheel set part and a lower water quenching part; and the quick cooling cavity (3) is connected with the air cooling cavity (10) through the star-shaped slag dumping wheel (9). The invention has the following advantages: water resources can be greatly saved, pollution to the surrounding environment can be reduced, most or even all of cooling water can be changed into steam for use, and steam condensate can be further recovered and used; and meanwhile, the waste heat of heat circulating air obtained through air cooling can be recovered by a waste heat boiler. Mechanical crushing and water quenching processes are further used, thereby ensuring the quality of slag granules. The blast furnace slag granulation and waste heat recovery device is simple in structure and reasonable in design and can ensure that the liquid blast furnace slag is effectively granulated, thereby ensuring that the heat of the liquid blast furnace slag can be sufficiently and effectively recovered.
Description
technical field [0001] The invention belongs to iron and steel metallurgy technology, relates to the field of ironmaking technology, in particular to a blast furnace slag granulation and waste heat recovery device. Background technique [0002] As one of my country's pillar industries, the iron and steel industry is not only a major energy-consuming but also a major pollutant emitter. Doing a good job in energy conservation and emission reduction is the most important prerequisite and condition for ensuring the sustainable development of my country's iron and steel industry. Blast furnace slag is a very valuable secondary resource and secondary energy source. The blast furnace produces about 400 kg of blast furnace slag on average for every ton of pig iron produced. The heat content of one ton of slag is about equivalent to the calorific value of 60kg of standard coal. At present, water quenching is generally used to granulate and cool high-temperature liquid blast furnace ...
Claims
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IPC IPC(8): C21B3/06C21B3/08F27D17/00
CPCC21B2400/024C21B2400/026C21B2400/052C21B2400/056C21B2400/08Y02P10/20Y02W30/50
Inventor 许征鹏邱润强
Owner 潼关中金冶炼有限责任公司